A 'devastated' mother is demanding a DNA test to find out if her dead baby was ever in the coffin she buried after an exhumation revealed it was empty.

Lydia Reid suspected the coffin in Saughton Cemetery, Edinburgh, was empty after Gary Paton died aged seven days old in 1975.

After a forensic scientist exhumed it last month, she found no remains in the coffin, leading her to demand tests to finally determine if there are traces of him in the coffin.

After fighting for the right to exhume her baby's coffin, Lydia Reid discovered to her devastation that it was empty

The 69-year-old helped expose the practice of Scottish hospitals unlawfully retaining dead children's body parts for research and told the Daily Record she believes her son's organs were taken without permission.

'My son wasn't there - someone stole the body of my son,' she said. 'I had buried my empty coffin.

'I want them tested for DNA as I want to know if there is any part of my son there.'

Police want to send samples to a company they regularly use for DNA testing.

But Ms Reid fears the samples could be lost or damaged and would prefer the testing firm Cellmark to carry out the tests.

'I want them to go to Cellmark because afterwards, they give me the legal right to have them back. Police Scotland do not give me that right.'

Lydia Reid believes her son's organs may have been harvested and helped expose the practice, which was widespread in Scottish hospitals

After Gary died at Edinburgh's Hospital for Sick Children, Ms Reid asked to see her son's body.

But she says she was shown a child that wasn't hers by Scotmid Co-operative Funeral staff, telling the BBC her concerns were dismissed.

'This baby was blonde and big, my baby was tiny and dark-haired. This was not my son,' she said.

'I objected but they said I was suffering from post-natal depression.'